I have a Dennerle Scapers Flow on my 50l Dennerele scapertank just just about gets away with the flow and I supplement it with ehiem skim, adding the spraybar to the Dennerle corner filter xl will help but as @GHNelson says its not really suited to your tank with CO2 (low tech it would be fine).You could consider upgrading the filter as the Dennerele is pretty feeble at only 150 Litres per hour.